Xmega Application Note | |||||
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Definition in file cdc_task.h.
Go to the source code of this file.
Functions | |
void | cdc_task (void) |
Entry point of the uart cdc management. | |
void | cdc_task_init (void) |
This function initializes the hardware resources required for CDC. | |
void | sof_action (void) |
Start of frame action. |
void cdc_task | ( | void | ) |
Entry point of the uart cdc management.
This function links the software UART and the USB bus.
Definition at line 76 of file cdc_task.c.
References cpt_sof, Is_device_enumerated, Led_tgl, NB_MS_BEFORE_FLUSH, SW_USART_PutChar(), SW_USART_RX_Buffer_GetByte(), SW_USART_Test_Hit(), tx_counter, uart_usb_flush(), uart_usb_getchar(), uart_usb_putchar(), and uart_usb_test_hit().
Referenced by main().
00077 { 00078 00079 /* Check if the device is enumerated. 00080 * If it is, run the code. 00081 * Otherwise, skip this section. */ 00082 if(Is_device_enumerated()){ 00083 00084 /* Flush buffer if timeout. */ 00085 if(cpt_sof>=NB_MS_BEFORE_FLUSH && tx_counter!=0 ){ 00086 cpt_sof=0; 00087 uart_usb_flush(); 00088 } 00089 00090 /* Check if something is received on the Soft UART and forward 00091 * it the USB UART if necessary. */ 00092 if (SW_USART_Test_Hit()){ 00093 Led_tgl(); 00094 uart_usb_putchar(SW_USART_RX_Buffer_GetByte()); 00095 } 00096 00097 /* Check if something is received on USB UART and forward 00098 * it to the Soft UART if necessary. */ 00099 if (uart_usb_test_hit()){ 00100 Led_tgl(); 00101 SW_USART_PutChar(uart_usb_getchar()); 00102 } 00103 00104 } 00105 }
void cdc_task_init | ( | void | ) |
This function initializes the hardware resources required for CDC.
Definition at line 65 of file cdc_task.c.
References SW_USART_init(), and Usb_enable_sof_interrupt.
Referenced by main().
00066 { 00067 SW_USART_init(); 00068 Usb_enable_sof_interrupt(); 00069 }
void sof_action | ( | void | ) |
Start of frame action.
This function increments the cpt_sof counter each times the USB Start Of Frame interrupt subroutine is executed (1ms) Usefull to manage time delays
Definition at line 114 of file cdc_task.c.
00115 { 00116 cpt_sof++; 00117 }
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